公开(公告)号：US11165332B2

公开(公告)日：2021-11-02

申请号：US16630033

申请日：2017-07-14

Applicant: Danfoss Power Electronics A/S

Inventor： Petar Ljushev

IPC: H02M1/32 ,  H02M1/36 ,  H02M5/45 ,  H02M5/458 ,  H02P27/06

Abstract: The invention provides an inverter system and a method of using said inverter system. A rectifier stage of the inverter system is used to charge a DC link stage to a first voltage level and a control module determines whether voltages over series connected capacitors of the DC link stage are balanced. If those voltages are balanced, the rectifier stage charges the DC link stage to a second voltage level higher than the first voltage level.